CN201264641Y

CN201264641Y - Adjustable steering column component for vehicle

Info

Publication number: CN201264641Y
Application number: CNU200820007673XU
Authority: CN
Inventors: J·R·里奇韦; L·M·廷宁
Original assignee: Delphi Technologies Inc
Current assignee: GM Global Technology Operations LLC
Priority date: 2007-03-30
Filing date: 2008-03-27
Publication date: 2009-07-01
Anticipated expiration: 2018-03-27

Abstract

The utility model discloses an adjustable steering column component for a vehicle, in particular to an adjustable steering column component (10) for a vehicle, which comprises an outer sheath (12) and an inner sheath (14), wherein, the inner sheath (14) is arranged in the outer sheath (12) in a sliding way along a longitudinal shaft line (L) and is used for extending movements. A pivot shaft (40) is connected with the outer sheath (12) and limits a pin shaft line (P). Falling pawls (56) are arranged around the pivot shaft (40) and are connected with the inner sheath (14) to prevent the connecting position of the extending movement, and the separation position which is separated from the inner sheath (14) for allowing the extending movement from rotating around the pin shaft line (P). An actuator (82) is installed on the pivot shaft (40) and is used for surrounding the pin shaft line (P) and the pivot shaft (40) for common rotation; simultaneously, the actuator (82) is connected with the falling pawls (56), and is used for moving the falling pawls (56) in the rotation direction opposite to the common rotation direction of the pivot shaft (40) and the actuator (82) between the connecting position and the separation position.

Description

The adjustable steering column assembly that is used for vehicle

Present patent application requires the U.S. Provisional Patent Application sequence number No.60/921 of submission on March 30th, 2007,063 preceence and all rights.

Technical field

The present invention relates to a kind of adjustable steering column assembly that is used for vehicle, it has blocking device.

Background technology

Vehicle can be equipped with Steering gear, and its position of regulating bearing circle is to strengthen user's traveling comfort and safety.For example, Steering gear can provide telescopic moving (telescoping movement), be used to move the steering wheel near and away from the user.In addition, Steering gear can provide or pitching is moved, to move the steering wheel up and down with respect to the user.These features are cooperated mutually so that the user can be adjusted to bearing circle desired, position easily, are used to operate this vehicle, thereby and are used to make bearing circle can remove the operating seat that the passage that provides bigger entered and left vehicle.In addition, when vehicle was in the collision, adjustable steering column often was designed to damage in a controlled manner, thereby minimized the injury to chaufeur.Provide the regulating mechanism of essential flexible, inclination and/or pitch regulation often to conflict mutually with the safety trip of the controlled breaking-up that Steering gear is provided.

Though imagined some solutions, but still need to provide a kind of cost-effective mechanism, it axially limits inner steering column sheath and outer Steering gear sheath during the breaking-up of Steering gear, and still allows the adjusting of necessity during normal operating state.The present invention is designed to inner steering column sheath and outer Steering gear sheath are fixed together, and is used to provide the bending of a kind of more repeatably load at failure.

Summary of the invention

A kind of adjustable steering column assembly that is used for vehicle.This assembly comprises first member that limits longitudinal axis.Second member with respect to first member longitudinally axis arrange slidably, be used for telescopic moving.Pivot pin is connected on first member, and limits pin axis.Ratchet arranges around pivot pin, and engaging second member with the engage position that prevents telescopic moving with to break away from second member rotatable around pin axis between with the disengaging configuration that allows telescopic moving.Actuator is installed on the pivot pin, is used for rotating jointly around pin axis and pivot pin, and is connected on the ratchet, is used for moving ratchet along the hand of rotation opposite with the common rotation of pivot pin and actuator between engage position and disengaging configuration.

Therefore, the invention provides a kind of cost-effective blocking device, be used for during normal serviceability, allowing the selectivity of steering column assembly to regulate, and be used for during the breaking-up of steering column assembly, axially limiting first member and second member.

Description of drawings

When considered in conjunction with the accompanying drawings, by the following detailed description of reference, the present invention will become better understood, so other advantage of the present invention is also with easy to understand, in the accompanying drawings:

Fig. 1 is the fragmentary, perspective view in conjunction with steering column assembly of the present invention;

Fig. 2 is the fragmentary, perspective view of first member, and blocking device and pivot pin are shown as with first member and are in exploded relationship;

Fig. 3 is the fragmentary, perspective view of steering column assembly, and tilt stand is removed;

Fig. 4 is the transparent view of blocking device;

Fig. 5 is the partial side view in cross section of steering column assembly, and blocking device is in engage position;

Fig. 6 is the partial side view in cross section of steering column assembly, and blocking device mediates;

Fig. 7 is the partial side view in cross section of steering column assembly, and blocking device is in disengaging configuration; With

Fig. 8 is the lateral plan of the ratchet of blocking device.

The specific embodiment

With reference to the accompanying drawings, wherein, in all a plurality of views, identical label is represented identical or corresponding part, and the partial view that is used for the adjustable steering column assembly of vehicle totally shows with 10 at Fig. 1.Adjustable steering column assembly 10 comprises first member 12 that limits longitudinal axes L.Second member 14 with respect to first member 12 longitudinally axis L arrange slidably, be used for telescopic moving.As hereinafter will describing with more details, the present invention can be incorporated in many assemblies except that steering column assembly.Yet herein for purpose of description, first member 12 will be called oversheath 12, the second members 14 subsequently will be called inner sheath 14 subsequently.

The bearing circle (not shown) is connected on the steering shaft (not shown), and this steering shaft is connected to again on the inner sheath 14.But user's green phase moves inner sheath 14 and bearing circle is telescopically moved to desired position for oversheath 12.In other words, inner sheath 14 shift-ins or shift out oversheath 12, this move the steering wheel respectively away from or near the user.Inner sheath 14 comprises a series of teeth 16, its longitudinally axis L arrange to limit a denture.Inner sheath 14 comprises outside face 18, and a series of teeth 16 of inner sheath 14 are below outside face 18 is arranged and be recessed in to outside face 18, with engaging of the tooth 16 that prevents oversheath 12 and inner sheath 14 during telescopic moving.In other words, the tooth 16 of inner sheath 14 is arranged away from oversheath 12, to prevent the pulling noise when inner sheath 14 slides in oversheath 12.

Tilt stand 34 is connected on the steering column assembly 10, is used to support inner sheath 14 and oversheath 12 and allows tilt to move.Tiltably mobile inner sheath 14 of user and oversheath 12 are to obtain the desired locations away from user's bearing circle.In other words, inner sheath 14 and oversheath 12 move together, make bearing circle move up and down with respect to the user.As showing partly, support 34 limits a plurality of holes (hole) 36, has a plurality of sawtooth 38 to be arranged in the hole 36.Support 34 is installed on the vehicle, and supporting inner sheath 14 and oversheath 12.What sawtooth 38 was arranged in support 34 in the hole 36 is configured to known in the artly, and will it further not described.In addition, the adjustable steering column assembly with this general construction is known by the industry, therefore will it not carried out any more detailed discussion.

With reference to figure 1-3, and may be as showing best among Fig. 2 that steering column assembly comprises pivot pin 40, it is connected on the oversheath 12 and limits pin axis P.First supporting member 42 and second supporting member 44 separate each other, and are connected on the oversheath 12.More specifically, first supporting member 42 and second supporting member 44 can be connected on the oversheath 12, perhaps with oversheath 12 moulding integrally.Each of first supporting member 42 and second supporting member 44 all limits emptying aperture (void) 46, and it extends through first supporting member 42 and second supporting member 44 along pin axis P, is used to hold and supports pivot pin 40.Pivot pin 40 preferably passes the emptying aperture 46 of first supporting member 40 and second supporting member 42 and arranges that pin axis P is across longitudinal axes L.Should be appreciated that pin axis P can separate with longitudinal axes L, intersect with longitudinal axes L, perhaps is any other suitable structure.

Pivot pin 40 comprises head 52 and the end 54 that separates each other.Nut can be arranged on the end 54, so that pivot pin 40 is installed on the oversheath 12.Pivot pin 40 also comprises outer surface, and it has the step-like configuration that limits retainer 97.The emptying aperture 46 of first supporting member 42 is configured to the diameter that the had diameter greater than the emptying aperture 46 of second supporting member 44.The emptying aperture 46 of first supporting member 42 is enough big, passes this emptying aperture 46 with the step-like configuration that allows pivot pin 40 and arranges.The emptying aperture 46 of second supporting member 44 is configured to hold the part of pivot pin 40, and retainer 97 makes step-like configuration extend to, but do not pass the emptying aperture 46 of second supporting member 44 in abutting connection with second supporting member 44.Step-like configuration also is defined as the irregular structure with any suitable shape.As shown in the figure, this irregular structure has a series of convex surfaces 96, and it preferably is arranged between first supporting member 42 and second supporting member 44.Yet, will be appreciated that, convex surfaces 96 can pass in first supporting member 42 and second supporting member 44 any and/or its both arrange.Convex surfaces 96 also limits a plurality of grooves 100 that separate each other.

First supporting member 42 and second supporting member 44 all also limit the line of rabbet joint 48, and it is axis L and extend across longitudinal axes L longitudinally, and separates with pin axis P.The line of rabbet joint 48 of first supporting member 42 and second supporting member 44 and emptying aperture 46 are arranged as closer to each other, make the line of rabbet joint 48 be isolated from each other with emptying aperture 46 and separate.

With reference now to Fig. 1-4 and 8,, steering column assembly 10 also comprises blocking device 20, is used for optionally preventing and allows inner sheath 14 with respect to oversheath 12 telescopic moving of axis L longitudinally.Blocking device 20 is adapted to being used for adjustable steering column assembly 10, and is very suitable for this purpose.Yet, will be appreciated that blocking device 20 can be used for the assembly except that Steering gear.For example, blocking device 20 can be used for scaffold, and jack stand perhaps is used to be used for optionally prevent and allow the device of any other type that moves of telescoping member.

In steering column assembly 10, blocking device 20 prevents that in collision inner sheath 14 from sliding in oversheath 12, absorbs the power that is applied to bearing circle to allow the energy absorbing device (not shown).In addition, because blocking device 20 prevents that in collision inner sheath 14 from sliding in oversheath 12, so blocking device 20 allows the bending of a kind of more repeatably load at failure.

Blocking device 20 comprises ratchet 56, and it is arranged and can center on pin axis P around pivot pin 40 and rotate, is used for optionally preventing telescopic moving and allows telescopic moving.Ratchet 56 preferably is arranged between first supporting member 42 and second supporting member 44.More specifically, ratchet 56 engage inner sheath 14 with the engage position that prevents telescopic moving and break away from inner sheath 14 with the disengaging configuration that allows telescopic moving between around pin axis P rotation.Ratchet 56 also limits predetermined midway location between engage position and disengaging configuration, will discuss to it hereinafter.Ratchet 56 limits neighborings 62, and comprises from periphery 62 and extending and away from the finger 64 of pivot pin 40.Periphery 62 limits the recess 66 adjacent with finger 64.

Ratchet 56 limits opening 68 and elongated hole (elongated bore) 70, and opening 68 arranges that along pin axis P elongated hole 70 separates with pin axis P.Pivot pin 40 passes opening 68 and arranges, opening 68 is used for freely rotating around pivot pin 40 greater than the irregular structure of pivot pin 40.Unified structure is preferably circular structure.Yet, will be appreciated that opening 68 can be any structure, such as elliptical configuration, rectangular configuration, square configuration, triangular construction, irregular structure or any other suitable structure.Elongated hole 70 approaches opening 68 and arranges, makes elongated hole 70 be isolated from each other with opening 68 and separates.As showing best among Fig. 8, ratchet 56 also comprises the drg 73 that is arranged in the hole 70, and there is shoulder 74 in drg 73, therefore makes the remainder of the part of elongated hole 70 greater than elongated hole 70, will the purpose of above-mentioned setting be discussed at length hereinafter.

Ratchet 56 comprises a series of teeth 72 of arranging around the neighboring 62 of ratchet 56.A series of teeth 72 of ratchet 56 engage a series of teeth 16 of inner sheath 14, to prevent telescopic moving when being in engage position.

Blocking device 20 also comprises actuator 82, and it has first plate 84 and second plate 86 that separates each other, to be defined for the opening that holds ratchet 56.Actuator 82 preferably is arranged between first supporting member 42 and second supporting member 44.Actuator 82 is installed on the pivot pin 40, is used for rotating jointly around pin axis P and pivot pin 40.Actuator 82 preferably includes hole (aperture) 88, and it has the irregular structure that matches with the irregular structure of pivot pin 40, is used for actuator 82 is installed to pivot pin 40, and is used to guarantee the common mobile of actuator 82 and pivot pin 40.More preferably, the hole 88 of actuator 82 is formed in each

plate

84,86, and comprises and be used for the flat surface 94 that matches with the irregular structure of pivot pin 40.In most preferred embodiment, the convex surfaces 96 of pivot pin 40 is in textural and flat surface 94 complementations actuator 82.Therefore, the flat surface 94 of convex surfaces 96 contiguous actuator 82 of pivot pin 40 makes the rotation of pivot pin 40 cause convex surfaces 96 to engage flat surface 94, with revolving actuator 82.Therefore, convex surfaces 96 engages with flat surface 94 under the situation of the opening 68 of engagement pawl 56 not.

Actuator 82 is connected on the ratchet 56, is used for moving this ratchet 56 along the hand of rotation opposite with the common rotation of pivot pin 40 and actuator 82 between engage position and disengaging configuration.Actuator 82 comprises at least one line of rabbet joint, and preferably includes first line of rabbet joint 90 and second line of rabbet joint 92.More preferably, first line of rabbet joint 90 is formed in first plate 84, and second line of rabbet joint 92 is formed in second plate 86, and

plate

84,86 joins with ratchet 56 from the side.

Blocking device 20 also comprises bar 50, and it is connected to ratchet 56 on the actuator 82, is used to help ratchet 56 moving along opposite hand of rotation.Bar 50 is arranged in in the hole 70 of the line of

rabbet joint

90,92 of actuator 82 and ratchet 56 at least one, is used for ratchet 56 is connected to actuator 82.Bar 50 preferably is arranged in both and the hole 70 of the line of

rabbet joint

90,92, is used for ratchet 56 is connected to actuator 82.As showing best among Fig. 5-7, the line of

rabbet joint

90,92 and hole 70 in all positions of actuator 82 and ratchet 56, keep each other across.

Bar 50 extends between first supporting member 42 and second supporting member 44, and be arranged in the line of rabbet joint 48 of first supporting member 42 and second supporting member 44, and longitudinally axis L is at supporting member 42, move in 44 the line of rabbet joint 48, and do not move across longitudinal axes L, this will be discussed in detail hereinafter.In addition, during the rotation of ratchet 56 and actuator 82, bar 50 longitudinally axis L in the hole 70 and the line of

rabbet joint

90,92 in move.Once more, bar 50 moves in the situation lower edge longitudinal axes L that does not move across longitudinal axes L, and this forces elongated hole 70 and the line of

rabbet joint

90,92 along across the direction of longitudinal axes L and follow moving of bar 50 across ground each other.When ratchet 56 was in midway location between engage position and disengaging configuration, bar 50 was arranged in the drg 73 against shoulder 74.

Shown in Fig. 1-4, bias unit 76 at one end be installed on the ratchet 56 and in end opposite in abutting connection with first member 12, be used for ratchet 56 is biased to constantly with second member 14 and engage.In an illustrated embodiment, bias unit 76 is for retracing spring and be connected on the oversheath 12, is used for ratchet 56 is biased to constantly with inner sheath 14 engaging.More specifically, the end opposite of retracing spring 76 comprises base portion 78, and an end of retracing spring 76 comprises hook portion 80, and hook portion 80 is extended away from base portion 78.Oversheath 12 also comprises the plate 32 adjacent with the tooth 16 of inner sheath 14, is furnished with a certain amount of grease on plate 32.Base portion 78 is in abutting connection with the plate 32 of oversheath 12, and hook portion 80 is connected to the finger 64 on the ratchet 56.More specifically, hook portion 80 is connected on the recess 66 of ratchet 56, is used for ratchet 56 is biased to constantly with inner sheath 14 engaging.Along with ratchet 56 rotates between engage position and disengaging configuration, base portion 78 longitudinally axis L slides on plate 32.When base portion 78 slides on plate 32, be arranged in grease on the plate 32 and reduce friction between base portion 78 and the plate 32, be used to prevent damage to plate 32.In other words, grease prevents the damage to oversheath 12 and/or retracing spring 76.

With reference to figure 1 and 3, rod member 102 is installed on the pivot pin 40 and can be used for helping the rotation of pivot pin 40 between the period of energization of rod member 102 around pin axis P rotation.Rod member 102 makes pivot pin 40 and actuator 82 rotations along a direction around the rotation of pin axis P, be used to make ratchet 56 along the direction opposite with rod member 102 around pin axis P rotation.More specifically, when rod member 102 rotates along a direction around pin axis P, the convex surfaces 96 of pivot pin 40 is along the direction rotation identical with rod member 102, the flat surface 94 of convex surfaces 96 engages actuator 82, so that actuator 82 is along the direction rotation identical with rod member 102, this makes ratchet 56 along the direction rotation opposite with actuator 82 and rod member 102 again.Rod member 102 is fixed on the inner sheath 14 at ratchet 56 around pin axis P and rotates between inner sheath 14 discharges with the unlocked position that allows telescopic moving with latched position and the ratchet 56 that prevents telescopic moving.Because convex surfaces 96 is arranged on the pivot pin 40 and revolving actuator 82, be little less so rod member 102 is rotated required power from locked.The head 52 of pivot pin 40 is used to prevent rod member 102 moving along pin axis P in abutting connection with rod member 102.

As shown in Figure 1, tilt lock mechanism 106 can be connected on the support 34 and with the hole 36 and the sawtooth 38 of support 34 and cooperate mutually, is used for optionally allowing and preventing that the inclination of inner sheath 14 and oversheath 12 from moving.More specifically, tilt lock mechanism 106 is connected on pivot pin 40 and the rod member 102.Will be appreciated that as is known to the person skilled in the art, the tilt lock mechanism 106 of any kind all can be used for allowing and prevent tilting to move.What should also be clear that is that tilt lock mechanism 106 is optional.

In order to allow telescopic moving, when convex surfaces 96 during around pin axis P rotation, actuator 82 is towards inner sheath 14 rotations, this make ratchet 56 around pin axis P away from inner sheath 14 rotations, so that the tooth 72 of ratchet 56 tooth 16 from inner sheath 14 is broken away from.Because the convex surfaces 96 of pivot pin 40 causes actuator 82 rotary pawls 56, thereby ratchet 56 is engaged and to break away from the required power of inner sheath 14 less.

Only for purpose of explanation, with reference to figure 5-7, the operation of blocking device 20 will be discussed hereinafter.For the position of fixed-direction dish, rod member 102 rotates to latched position (Fig. 5) around pin axis P from unlocked position (Fig. 7).When rod member 102 rotations, pivot pin 40 is around pin axis P rotation, and this will make the convex surfaces 96 direction rotation identical with the direction of rod member 102 rotations around pin axis P edge.The flat surface 94 of convex surfaces 96 engages actuator 82, and the opening 68 of engagement pawl 56 not, this make actuator 82 under the situation of rotary pawl 56 not around pin axis P along and the identical direction rotation of direction of rod member 102 rotations.

Bar 50 in the line of rabbet joint 48 of first supporting member 42 and second supporting member 44 longitudinally axis L move, be used to allow the line of rabbet joint 90 of

actuator

82,92 and the elongated hole 70 of ratchet 56 across longitudinal axes L and move along bar 50 across ground each other, this causes the opposite sense rotary pawl 56 of actuator 82 along rod member 102 again.More specifically, when actuator 82 during along the direction rotation identical with rod member 102, ratchet 56 is along the direction rotation opposite with actuator 82 and rod member 102.Ratchet 56 rotates to predetermined midway location (Fig. 6), rest in the drg 73 and in abutting connection with the shoulder 74 of ratchet 56 at this position bar 50, this allows retracing spring 76 that the tooth 16 that the tooth 72 of ratchet 56 rotates to be with inner sheath 14 is aligned, and rotates to engage position.In other words, especially when the indented joint of tooth top-tooth top took place, the shoulder 74 of ratchet 56 prevented that actuator 82 from forcing ratchet 56 to enter engage position, and allowed ratchet 56 moving with respect to the tooth 16 of inner sheath 14.In addition, the tooth 16 of shoulder 74 compensation actuators 82 of ratchet 56, bar 50, inner sheath 14, and the production tolerance between the tooth 72 of ratchet 56.Yet, will be appreciated that drg 73 and shoulder 74 also can compensate other tolerance.

In case ratchet 56 rotates to engage position (Fig. 5), the tooth 72 of ratchet 56 just engages the tooth 16 of inner sheath 14, is used to prevent telescopic moving.As is known to the person skilled in the art, in rod member 102 rotations, the sawtooth 38 of tilt lock mechanism 106 splice holder 34 is to prevent to tilt to move.

Described the present invention in the mode of explanation, what it should be understood that is that employed term is intended to have literal description and unrestricted character.It will be apparent for a person skilled in the art that now that according to above-mentioned instruction many modifications of the present invention and modification are possible.Therefore, it should be understood that within the scope of the appended claims that the present invention can be different from concrete described mode and implement.

Claims

1. adjustable steering column assembly (10) that is used for vehicle is characterized in that described assembly (10) comprising:

First member (12), it limits longitudinal axis (L),

Second member (14), it is arranged along described longitudinal axis (L) slidably with respect to described first member (12), is used for telescopic moving,

Pivot pin (40), it is connected on described first member (12), and limits pin axis (P),

Ratchet (56), it is arranged around described pivot pin (40), and engaging described second member (14) with the engage position that prevents described telescopic moving with break away from described second member (14) to center on described pin axis (P) between with the disengaging configuration that allows described telescopic moving rotatable

Actuator (82), it is installed on the described pivot pin (40), be used for around the common rotation of described pin axis (P) and described pivot pin (40), and be connected on the described ratchet (56), be used between described engage position and described disengaging configuration, moving described ratchet (56) along the hand of rotation opposite with the described common rotation of described pivot pin (40) and described actuator (82).

2. assembly according to claim 1 (10), it is characterized in that, described assembly (10) also comprises bar (50), and described bar (50) is connected to described ratchet (56) on the described actuator (82), moves along described opposite the described of hand of rotation to help described ratchet (56).

3. assembly according to claim 2 (10), it is characterized in that, described actuator (82) comprises at least one line of rabbet joint (90,92), and described ratchet (56) comprises elongated hole (70), described bar (50) is arranged in the described line of rabbet joint (90,92) and described hole (70), is used for described ratchet (56) is connected to described actuator (82).

4. assembly according to claim 3 (10), it is characterized in that, described actuator (82) comprises first plate (84) with first line of rabbet joint (90) and second plate (86) with second line of rabbet joint (92), described plate (84,86) join with described ratchet (56) from the side, and described bar (50) is arranged in both and the described hole (70) of the described line of rabbet joint (90,92), is used for described ratchet (56) is connected to described actuator (82).

5. assembly according to claim 3 (10) is characterized in that, the described line of rabbet joint (90,92) and described hole (70) on all positions of described actuator (82) and described ratchet (56), keep each other across.

6. assembly according to claim 3 (10), it is characterized in that, described assembly (10) also comprises the drg (73) that is arranged in the described hole (70), there is shoulder (74) in described drg (73), when described ratchet (56) was in midway location between described engage position and the described disengaging configuration, described bar (50) abutted against described shoulder (74) and is arranged in the described drg (73).

7. assembly according to claim 1 (10), it is characterized in that, described assembly (10) also comprises bias unit (76), it at one end is installed on the described ratchet (56), and in abutting connection with described first member (12), be used for described ratchet (56) is biased to constantly with described second member (14) and engage in end opposite.

8. assembly according to claim 7 (10) is characterized in that, described ratchet (56) comprises neighboring (62) and the finger (64) that extends from described neighboring (62), and described bias unit (76) is installed on the described finger (64).

9. assembly according to claim 1 (10), it is characterized in that, described ratchet (56) comprises neighboring (62) and a series of teeth (72) of arranging along described neighboring (62), and described second member (14) comprises outside face (18) and a series of teeth (16) of arranging along described outside face (18), when being in described engage position, the described tooth (72) of described ratchet (56) engages the described tooth (16) of described second member (14).

10. assembly according to claim 1 (10), it is characterized in that, described actuator (82) comprises the hole (88) with irregular structure, and described pivot pin (40) comprises outer surface, described outer surface has the irregular structure that matches with the described irregular structure of described hole (88), be used for described actuator (82) is installed to described pivot pin (40), and be used to guarantee the common mobile of described actuator (82) and described pivot pin (40).

11. assembly according to claim 10 (10) is characterized in that, described ratchet (56) comprises the opening (68) greater than the described irregular structure of described pivot pin (40), is used for freely rotating around described pivot pin (40).

12. assembly according to claim 1 (10) is characterized in that, described assembly (10) also comprises the rod member (102) that is installed on the described pivot pin (40), is used for helping between the period of energization of described rod member (102) rotation of described pivot pin (40).

13. assembly according to claim 1 (10), it is characterized in that, described assembly (10) also comprises first supporting member (42) and second supporting member (44) that is connected on described second member (14), and each described supporting member includes the emptying aperture (46) that is used to hold and support described pivot pin (40).

14. assembly according to claim 13 (10), it is characterized in that, the described emptying aperture (46) of described first supporting member (42) has the diameter greater than the described emptying aperture (46) of described second supporting member (44), and described pivot pin (40) has the step-like configuration that defines retainer, described pivot pin (40) extends through described second supporting member (44), and described retainer is in abutting connection with described second supporting member (44).